I think they say it’s “unofficial” on the reports. I’m sure Florida has similar voting rules. Screw up a ballot or voting twice (early and at precinct) only one ballot counts. Can’t submit multiple ballots because you forgot to vote for one candidate.
Let’s go with the Iraqi election system...you appear in person, dip your index finger in indelible ink, and then get a PAPER BALLOT. Nothing is 100% fool-proof, but that is as close as it gets.